Figure 127: Extranet Load Balancing - Alcatel-Lucent 7750 SR Manual

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Virtual Private Routed Network Services

Another use case displayed in

shows an extra net VPRN (VRF). The traffic ingressing

the PE that should be load balanced is part of a second VPRN and the route over which the load

balancing is to occur is part of a separate VPRN instance and are leaked into the second VPRN by

route policies.

Here, both routes can have a source protocol of VPN-IPv4 but one will still have an IPv4 nexthop

and the other can have a VPN-IPv4 nexthop pointing out a network interface. Traffic will still be

load balanced (if eiBGP is enabled) as if only a single VRF was involved.

Figure 127: Extranet Load Balancing

Traffic will be load balanced across both the IPv4 and VPN-IPv4 nexthops. This helps to use all

available bandwidth to reach a dual-homed VPRN.

7750 SR OS Services Guide